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Fundamental Nonlinear Track Load-Deflection Behavior for Condition Evaluation
Transportation Research Record: Journal of the Transportation Research Board, 2001 Locations of rapid track condition deterioration are typically well known to railway track engineers, although the cause and methods of improvement may be unclear. The rapid deterioration of these locations can be due to many factors such as poor conditions of the components (rail, tie, and ballast) or failure of any of the components or subgrade.
Sussmann, T R, Ebersohn, W, Selig, E T
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Juniorstav 2025: Proceedings 26th International Scientific Conference Of Civil EngineeringThis review paper discusses various analytical models that can describe the vehicle-track system without requiring extensive and computationally demanding numerical models.
Svobodová, Nikola
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Robust circle tracking for deflection measurements in structural fire experiments [PDF]
Proceedings of the 11th International Conference on Structures in Fire (SiF2020), 2020 Measuring movements and deflections in structural fire experiments can yield critical information to generate the knowledge required to further understanding of the behaviour of structural systems in fire. However, due to the influence of flames, smoke, and heat, detailed deflection measurements can be difficult to install and maintain during ...
Felix Wiesner, Luke Bisby
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Exception Criteria in Vertical Track Deflection and Modulus
ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference, 2007The network constraints of freight railroad traffic are moving the industry to heavier tonnage trains, higher axle loads and increased velocity. The dynamics of heavier axle loads and speed produce high stresses in the track infrastructure. Track integrity is strongly related to the vertical track modulus — the relationship between the rail deflection ...
Sheng Lu +6 more
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Polyhedron tracking and gravity tractor asteroid deflection
Acta Astronautica, 2014Abstract In the wake of the Chelyabinsk airburst, the defense against hazardous asteroids is becoming a topic of high interest. This work improves the gravity tractor asteroid deflection approach by tracking realistic small body shapes with tilted ion engines. An algorithm for polyhedron tracking was evaluated in a fictitious impact scenario.
N. Ummen, V. Lappas
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Motion Planning and Tracking for Tip Displacement and Deflection Angle for Flexible Beams
Journal of Dynamic Systems, Measurement, and Control, 2008Abstract Explicit motion-planning reference solutions are presented for flexible beams with Kelvin–Voigt (KV) damping. The goal is to generate periodic reference signals for the displacement and deflection angle at the free-end of the beam using only actuation at the base.
Antranik Antonio Siranosian +3 more
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Deflection-Aware Tracking-Principal Selection in Active Wireless Sensor Networks
IEEE Transactions on Vehicular Technology, 2012This paper addresses the problem of energy efficiency balanced with tracking accuracy in wireless sensor networks (WSNs). Specifically, we focus on the issues related to selecting tracking principals, i.e., the nodes with two special tasks: 1) coordinating the activities among the sensors that are detecting the tracked object's locations in time and 2)
Fan Zhou 0002 +5 more
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A numerical method for estimating the deflections of ballasted railway tracks
International Conference on Road and Rail Infrastructure, 2018This paper presents a method to estimate the deflection in ballasted railway tracks and compares the results with field measurements, performed by other researchers. The influence of different variables on deflection estimation such as loading, gauge, rails, sleepers, layers???
George Wilton Rangel +2 more
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Mechanisms Controlling the Downstream Poleward Deflection of Midlatitude Storm Tracks
Journal of the Atmospheric Sciences, 2017Abstract The Atlantic and Pacific storm tracks in the Northern Hemisphere are characterized by a downstream poleward deflection, which has important consequences for the distribution of heat, wind, and precipitation in the midlatitudes. In this study, the spatial structure of the storm tracks is examined by tracking transient cyclones in
Yohai Kaspi, Talia Tamarin
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